Improvement in the manufacture of salt from brines



tinirt aber para aaa;

SAMUEL D. GILSON, OF

srnacusn, New Yoan.

Lettersl Patent N0. 113,045, dated March 28, 1871.

IMPROVEMENT IIN THE MANUFACTURE OF SALT FROM BRINES.

The Schedule .referred to in these Letters Patent and making part of the same.

To all whom' it may concern Figure 1 is a central vertical longitudinal section of my invention 5 Figure 2 is a vertical crosssection of the same, showing the tank, cylinder, knife,` and discharge-pipe 5 Figure 3 is a modification of the collecting and discharge-pipe.

My invention consistsv ]1`irst,iu arranging over a brine-tank or bath, in' suitable bearings, one or more cylinders, which,'in operation, is or are to belled with steam, hot water, 811e.

Second, in providing said cylinders with S or othershaped pipes, connected with an exhaust-pipe, for collecting the water or condensed steam inone cylinder and conveying it to another or back-tothe boiler.

Third, inv a steam-chest, provided lwith a knife o1'l scapper, which chest can be adjusted so as `to make -ne or coarse salt.

Fourth, in providing an exhaust-pipe between one or more cylinders with a stop-cock or valve for regulating the supply or exhaust of steam. A

Referring now to the drawing- A. in the several figures represents a tank or bath, made of wood or metal, but. so constructed as to resist' the chemical action of the brine when placed therein.

It is provided with any number of standards, a' a, which form bearings for steam-cylinders B.

These cylinders may be made of *wood or metal, preferably of the latter, and either cast or of sheet metal.

' Ihey are provided with suitable openings, through which pipes b b extend. These pipes are made stationary, and provided with suitable stuffing-boxes, andto the pipes b b, inside the cylinders, are secured an S or other-shaped water-collecting and discharge-pipes or tubes D. y

The head or heads or the end or ends of cylinder or cylinders upon the inside or the outside of the cylinder or cylinders are provided withl a 4.non-conducting material, so as to prevent the escape of and utilise heat. i

In the present instance a metallic 0r other plate is placed upon the inside or the outside of the head or end, a space being formed for the interposition of suitable material to actas a non-conductor. d

The object of providing the cylinder or cylinders with such non-conductors of heat v is apparent, since there can be no radiation of heat at the head or end;

consequently the heat is retained within the cylinder.

When one or more cylinders are used, stop-cocks or valves O are interposed between the exhaust-pipes b and supply-pipes b, so as to regulate the ilow of water or steam from the cylinder or cylinders.

To the tank or bath A is secured a steam-chest or box, E, provided with a knife, e, and suitable valve.

The chest is made adjustable horizontally by means of a screw or other suitable device, and is for the purpose of making, and at the Sametime eieotually dry- ,ing either, as it passes over it, fine or coarse salt.

1n using my apparatus the brine or salt water is prepared in the usual' manner, and conveyed to the bath. Steam, water, hot air, 85e., are let into the cylinder or cylinders,and motion being applied to it or them, the cylinder is hung so as to come in contact with the salt water or brine, and, as the surface successively revolves from the saltwater or brine, a film of salt .will be, deposited thereon, which is dried in part by' ity, and descends to the bottom of the tank, but the same thus produced is of a coarse quality. l

When it is desired to make a iue quality of salt, the steam-chest is moved toward the cylinder or cylinders, and so adjusted as to scrape the salt off in the required degree of fineness, and as tl". salt falls off on to the chestE it is quickly dried and' ready for use.

In order to prevent any chemical action of the'salt on the cylinder or cylinders, it or they may be, if it be desired, plated or-otherwise covered with a metal or other material different from that of which the cylinder or cylinders may be formed or composed.

While the cylinder or cylinders revolve in the salt water not yet come to brine, lime, iron, and other impurities adhere or form a coating upon the periphery of their surfaces. l y I The impurities thus formed, it is found, are difficult and almost impossible to remove. This I overcome, for when the Acylinder or cylinders revolve or move within the tank or bath, and the impurities above mentioned adhere to the periphery of the surface or surfaces of the cylinder or cylinders, the knifeE, which Iprefer to be heated `by hot water or steam, is moved toward the periphery of saidcylliuder or cylinders, and all impurities removed' to tbe extent required.

rlhese impurities, formed by the chemical action of the salt water or brine upon the cylinder or cylinders,

' after being removed by the knife descend to the bottom, and the water is then drawn oii before its utilizationi The steam in the cylinders will be very apt to condense, and as they revolve the Waterl is collected in the tubes D, and passed from cylinder to cylinder, if more than one be used, to the boiler, thu s economia: ing fuel.

In ig. 3 is' shown a modified form ofthe water-eollecting tube, inwlliich a flattened concave end isA substituted for the curved tube. its operation being substantially the same.

The tarious qualities of salt thus prepared by my 'apparatus are ready for packing as soon as they leave the drying-chest, boxes,&c., being placed at the chests to catch it; or it maybe removed to any desired place by an apron attached tothe bath in the rear of the knife. 4

It will be found that salt manufactured by my apparatus is unexcelled in. quality, and it can also be manufactured very cheap and at the same time be equal tothe best.

Having thus described my invention,

What I claim is- 1. A movable or revolving hollow cylinder or a se-A ries of hollow cylinders hung in suitable bearings on a brine-tank, when said cylinder orrcylin'ders are plated, coated, or covered with a metaloi-other material different frcm that ofwhich the cylinder or cylinders are composed, substantially as described.

` 2. In an evaporating or saturating salt-engine, a

movable or revolving -bollow cylinder or cylinders, in combination witha `vat or tank which is supplied with salt water or brine, subi tantially as described.

3. The head or head of a hollow cylnder'provided with a non-conductor, substantially as described.

4. Collecting and discharge-cups or pipes, arranged within a hollow cylinder or cylinders, for a purpose substantially as described.

5. Arvalve or cock arranged upon the cduction and induction-pipes of a salt-evaporator or saturating-en gine, substantially as described.

6. A hollow steam or hot-air cylinder revolving in` a brine-tank provided with pipes or cupswithin its interior, in combination ywith theexhaustV ni'etuin-pipe b", for a purpose substantially as described..

7. A partition arranged in a brine-tank 'between an evaporating and saturating hollow cylinderl substan tially as set forth. 8. A hollow adjustable knife, capable of being 'lo 'cated and so constructed and arranged as to produce coarse or ue salt, substantially as described.

9. rlhe method of drying salt by passing the sameV ftank, substantially as described.

12. Evaporatng and satnrating cylinders, communicating with each other through the medium of an induction and eduction-pipe, substantially as described.

To the above I have signed my name this 21st day of September, 1870.

SAM. D. GILSON.

Witnesses:

JAMES L. Noms, H. CLAY JOHNSON. 

